80% resize with magnets

Smaller version (80% of original). Includes slots for cylinder magnets (diameter x height: 5x4mm). Magnets pressure fit into slots.

Test Printed on A1 Mini, 0.8mm nozzle, brim enabled, PLA.

Copy and edit the re-mix here: https://cad.onshape.com/documents/efb1aa944f08cfe6fff28031/w/8e9001214b070c82ffad2451/e/e9fd5988d5ca5ca799a8e817
- use transform to resize model.
- edit magnet dimensions.